/src/kamailio/src/core/receive.c
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1 | | /* |
2 | | * Copyright (C) 2001-2003 FhG Fokus |
3 | | * |
4 | | * This file is part of Kamailio, a free SIP server. |
5 | | * |
6 | | * Kamailio is free software; you can redistribute it and/or modify |
7 | | * it under the terms of the GNU General Public License as published by |
8 | | * the Free Software Foundation; either version 2 of the License, or |
9 | | * (at your option) any later version |
10 | | * |
11 | | * Kamailio is distributed in the hope that it will be useful, |
12 | | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
13 | | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
14 | | * GNU General Public License for more details. |
15 | | * |
16 | | * You should have received a copy of the GNU General Public License |
17 | | * along with this program; if not, write to the Free Software |
18 | | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA |
19 | | * |
20 | | */ |
21 | | |
22 | | /*! |
23 | | * \file |
24 | | * \brief Kamailio core :: |
25 | | * \ingroup core |
26 | | * Module: \ref core |
27 | | */ |
28 | | |
29 | | |
30 | | #include <string.h> |
31 | | #include <stdlib.h> |
32 | | #include <sys/time.h> |
33 | | |
34 | | #include "receive.h" |
35 | | #include "globals.h" |
36 | | #include "dprint.h" |
37 | | #include "route.h" |
38 | | #include "parser/msg_parser.h" |
39 | | #include "forward.h" |
40 | | #include "action.h" |
41 | | #include "mem/mem.h" |
42 | | #include "ip_addr.h" |
43 | | #include "script_cb.h" |
44 | | #include "nonsip_hooks.h" |
45 | | #include "dset.h" |
46 | | #include "fmsg.h" |
47 | | #include "usr_avp.h" |
48 | | #include "xavp.h" |
49 | | #include "select_buf.h" |
50 | | #include "locking.h" |
51 | | |
52 | | #include "tcp_server.h" /* for tcpconn_add_alias */ |
53 | | #include "tcp_options.h" /* for access to tcp_accept_aliases*/ |
54 | | #include "cfg/cfg.h" |
55 | | #include "core_stats.h" |
56 | | #include "kemi.h" |
57 | | |
58 | | #ifdef DEBUG_DMALLOC |
59 | | #include <mem/dmalloc.h> |
60 | | #endif |
61 | | |
62 | | int _sr_ip_free_bind = 0; |
63 | | |
64 | | unsigned int msg_no = 0; |
65 | | /* address preset vars */ |
66 | | str default_global_address = {0, 0}; |
67 | | str default_global_port = {0, 0}; |
68 | | str default_via_address = {0, 0}; |
69 | | str default_via_port = {0, 0}; |
70 | | |
71 | | int ksr_route_locks_size = 0; |
72 | | static rec_lock_set_t *ksr_route_locks_set = NULL; |
73 | | |
74 | | int ksr_route_locks_set_init(void) |
75 | 0 | { |
76 | 0 | if(ksr_route_locks_set != NULL || ksr_route_locks_size <= 0) |
77 | 0 | return 0; |
78 | | |
79 | 0 | ksr_route_locks_set = rec_lock_set_alloc(ksr_route_locks_size); |
80 | 0 | if(ksr_route_locks_set == NULL) { |
81 | 0 | LM_ERR("failed to allocate route locks set\n"); |
82 | 0 | return -1; |
83 | 0 | } |
84 | 0 | if(rec_lock_set_init(ksr_route_locks_set) == NULL) { |
85 | 0 | LM_ERR("failed to init route locks set\n"); |
86 | 0 | return -1; |
87 | 0 | } |
88 | 0 | return 0; |
89 | 0 | } |
90 | | |
91 | | void ksr_route_locks_set_destroy(void) |
92 | 0 | { |
93 | 0 | if(ksr_route_locks_set == NULL) |
94 | 0 | return; |
95 | | |
96 | 0 | rec_lock_set_destroy(ksr_route_locks_set); |
97 | 0 | rec_lock_set_dealloc(ksr_route_locks_set); |
98 | 0 | ksr_route_locks_set = NULL; |
99 | 0 | } |
100 | | |
101 | | /** |
102 | | * increment msg_no and return the new value |
103 | | */ |
104 | | unsigned int inc_msg_no(void) |
105 | 0 | { |
106 | 0 | return ++msg_no; |
107 | 0 | } |
108 | | |
109 | | /** |
110 | | * |
111 | | */ |
112 | | int sip_check_fline(char *buf, unsigned int len) |
113 | 0 | { |
114 | 0 | char *p; |
115 | 0 | int m; |
116 | |
|
117 | 0 | m = 0; |
118 | 0 | for(p = buf; p < buf + len; p++) { |
119 | | /* first check if is a reply - starts with SIP/2.0 */ |
120 | 0 | if(m == 0) { |
121 | 0 | if(*p == ' ' || *p == '\t' || *p == '\r' || *p == '\n') |
122 | 0 | continue; |
123 | 0 | if(buf + len - p < 10) |
124 | 0 | return -1; |
125 | 0 | if(strncmp(p, "SIP/2.0 ", 8) == 0) { |
126 | 0 | LM_DBG("first line indicates a SIP reply\n"); |
127 | 0 | return 0; |
128 | 0 | } |
129 | 0 | m = 1; |
130 | 0 | } else { |
131 | | /* check if a request - before end of first line is SIP/2.0 */ |
132 | 0 | if(*p != '\r' && *p != '\n') |
133 | 0 | continue; |
134 | 0 | if(p - 10 >= buf) { |
135 | 0 | if(strncmp(p - 8, " SIP/2.0", 8) == 0) { |
136 | 0 | LM_DBG("first line indicates a SIP request\n"); |
137 | 0 | return 0; |
138 | 0 | } |
139 | 0 | } |
140 | 0 | return -1; |
141 | 0 | } |
142 | 0 | } |
143 | 0 | return -1; |
144 | 0 | } |
145 | | |
146 | | /** |
147 | | * |
148 | | */ |
149 | | static sr_net_info_t *ksr_evrt_rcvnetinfo = NULL; |
150 | | int ksr_evrt_received_mode = 0; |
151 | | str kemi_received_route_callback = STR_NULL; |
152 | | |
153 | | /** |
154 | | * |
155 | | */ |
156 | | sr_net_info_t *ksr_evrt_rcvnetinfo_get(void) |
157 | 0 | { |
158 | 0 | return ksr_evrt_rcvnetinfo; |
159 | 0 | } |
160 | | |
161 | | /** |
162 | | * |
163 | | */ |
164 | | int ksr_evrt_received(char *buf, unsigned int *len, receive_info_t *rcv_info) |
165 | 0 | { |
166 | 0 | sr_kemi_eng_t *keng = NULL; |
167 | 0 | sr_net_info_t netinfo; |
168 | 0 | int ret = 0; |
169 | 0 | int rt = -1; |
170 | 0 | run_act_ctx_t ra_ctx; |
171 | 0 | run_act_ctx_t *bctx = NULL; |
172 | 0 | sip_msg_t *fmsg = NULL; |
173 | 0 | str evname = str_init("core:msg-received"); |
174 | |
|
175 | 0 | if(len == 0 || rcv_info == NULL || buf == NULL) { |
176 | 0 | LM_ERR("required parameters are not available\n"); |
177 | 0 | return -1; |
178 | 0 | } |
179 | | |
180 | 0 | if(kemi_received_route_callback.len > 0) { |
181 | 0 | keng = sr_kemi_eng_get(); |
182 | 0 | if(keng == NULL) { |
183 | 0 | LM_DBG("kemi enabled with no core:msg-receive event route " |
184 | 0 | "callback\n"); |
185 | 0 | return 0; |
186 | 0 | } |
187 | 0 | } else { |
188 | 0 | rt = route_lookup(&event_rt, evname.s); |
189 | 0 | if(rt < 0 || event_rt.rlist[rt] == NULL) { |
190 | 0 | LM_DBG("event route core:msg-received not defined\n"); |
191 | 0 | return 0; |
192 | 0 | } |
193 | 0 | } |
194 | 0 | memset(&netinfo, 0, sizeof(sr_net_info_t)); |
195 | 0 | netinfo.data.s = buf; |
196 | 0 | netinfo.data.len = *len; |
197 | 0 | netinfo.bufsize = BUF_SIZE; |
198 | 0 | netinfo.rcv = rcv_info; |
199 | |
|
200 | 0 | ksr_evrt_rcvnetinfo = &netinfo; |
201 | 0 | set_route_type(REQUEST_ROUTE); |
202 | 0 | fmsg = faked_msg_get_next(); |
203 | 0 | init_run_actions_ctx(&ra_ctx); |
204 | 0 | if(keng) { |
205 | 0 | bctx = sr_kemi_act_ctx_get(); |
206 | 0 | sr_kemi_act_ctx_set(&ra_ctx); |
207 | 0 | ret = sr_kemi_route( |
208 | 0 | keng, fmsg, REQUEST_ROUTE, &kemi_received_route_callback, NULL); |
209 | 0 | sr_kemi_act_ctx_set(bctx); |
210 | 0 | } else { |
211 | 0 | ret = run_actions(&ra_ctx, event_rt.rlist[rt], fmsg); |
212 | 0 | } |
213 | 0 | if(ra_ctx.run_flags & DROP_R_F) { |
214 | 0 | LM_DBG("dropping received message\n"); |
215 | 0 | ret = -1; |
216 | 0 | } |
217 | 0 | *len = netinfo.data.len; |
218 | 0 | ksr_evrt_rcvnetinfo = NULL; |
219 | |
|
220 | 0 | return ret; |
221 | 0 | } |
222 | | |
223 | | |
224 | | static int ksr_evrt_pre_routing_idx = -1; |
225 | | str kemi_pre_routing_callback = STR_NULL; |
226 | | |
227 | | |
228 | | /** |
229 | | * |
230 | | */ |
231 | | int ksr_evrt_pre_routing(sip_msg_t *msg) |
232 | 0 | { |
233 | 0 | int ret = 0; |
234 | 0 | int rt = -1; |
235 | 0 | run_act_ctx_t ra_ctx; |
236 | 0 | run_act_ctx_t *bctx = NULL; |
237 | 0 | sr_kemi_eng_t *keng = NULL; |
238 | 0 | str evname = str_init("core:pre-routing"); |
239 | 0 | recv_flags_t brflags; |
240 | |
|
241 | 0 | if(msg->rcv.rflags & RECV_F_INTERNAL) { |
242 | 0 | DBG("skip internal routed message\n"); |
243 | 0 | return 0; |
244 | 0 | } |
245 | | |
246 | 0 | if(kemi_pre_routing_callback.len > 0) { |
247 | 0 | keng = sr_kemi_eng_get(); |
248 | 0 | if(keng == NULL) { |
249 | 0 | LM_DBG("kemi enabled with no core:pre-routing event route " |
250 | 0 | "callback\n"); |
251 | 0 | return 0; |
252 | 0 | } |
253 | 0 | } else { |
254 | 0 | if(ksr_evrt_pre_routing_idx == -1) { |
255 | 0 | rt = route_lookup(&event_rt, evname.s); |
256 | 0 | if(rt < 0 || event_rt.rlist[rt] == NULL) { |
257 | 0 | ksr_evrt_pre_routing_idx = -2; |
258 | 0 | } |
259 | 0 | } else { |
260 | 0 | rt = ksr_evrt_pre_routing_idx; |
261 | 0 | } |
262 | 0 | if(rt < 0 || event_rt.rlist[rt] == NULL) { |
263 | 0 | LM_DBG("event route core:pre-routing not defined\n"); |
264 | 0 | return 0; |
265 | 0 | } |
266 | 0 | } |
267 | | |
268 | 0 | set_route_type(REQUEST_ROUTE); |
269 | 0 | init_run_actions_ctx(&ra_ctx); |
270 | 0 | brflags = msg->rcv.rflags; |
271 | 0 | msg->rcv.rflags |= RECV_F_PREROUTING; |
272 | 0 | if(keng) { |
273 | 0 | bctx = sr_kemi_act_ctx_get(); |
274 | 0 | sr_kemi_act_ctx_set(&ra_ctx); |
275 | 0 | ret = sr_kemi_route( |
276 | 0 | keng, msg, REQUEST_ROUTE, &kemi_pre_routing_callback, &evname); |
277 | 0 | sr_kemi_act_ctx_set(bctx); |
278 | 0 | } else { |
279 | 0 | ret = run_actions(&ra_ctx, event_rt.rlist[rt], msg); |
280 | 0 | } |
281 | 0 | msg->rcv.rflags = brflags; |
282 | 0 | if(ra_ctx.run_flags & DROP_R_F) { |
283 | 0 | LM_DBG("drop was used\n"); |
284 | 0 | return 1; |
285 | 0 | } |
286 | 0 | LM_DBG("execution returned %d\n", ret); |
287 | |
|
288 | 0 | return 0; |
289 | 0 | } |
290 | | |
291 | | /** Receive message |
292 | | * WARNING: buf must be 0 terminated (buf[len]=0) or some things might |
293 | | * break (e.g.: modules/textops) |
294 | | */ |
295 | | int receive_msg(char *buf, unsigned int len, receive_info_t *rcv_info) |
296 | 0 | { |
297 | 0 | struct sip_msg *msg = NULL; |
298 | 0 | struct run_act_ctx ctx; |
299 | 0 | struct run_act_ctx *bctx = NULL; |
300 | 0 | int ret = -1; |
301 | 0 | struct timeval tvb = {0}, tve = {0}; |
302 | 0 | unsigned int diff = 0; |
303 | 0 | str inb = STR_NULL; |
304 | 0 | sr_net_info_t netinfo = {0}; |
305 | 0 | sr_kemi_eng_t *keng = NULL; |
306 | 0 | sr_event_param_t evp = {0}; |
307 | 0 | unsigned int cidlockidx = 0; |
308 | 0 | unsigned int cidlockset = 0; |
309 | 0 | int errsipmsg = 0; |
310 | 0 | int exectime = 0; |
311 | |
|
312 | 0 | if(rcv_info->bind_address == NULL) { |
313 | 0 | LM_ERR("critical - incoming message without local socket [%.*s ...]\n", |
314 | 0 | (len > 128) ? 128 : len, buf); |
315 | 0 | return -1; |
316 | 0 | } |
317 | | |
318 | 0 | if(ksr_evrt_received_mode != 0) { |
319 | 0 | if(ksr_evrt_received(buf, &len, rcv_info) < 0) { |
320 | 0 | LM_DBG("dropping the received message\n"); |
321 | 0 | goto error00; |
322 | 0 | } |
323 | 0 | } |
324 | 0 | if(sr_event_enabled(SREV_NET_DATA_RECV)) { |
325 | 0 | if(sip_check_fline(buf, len) == 0) { |
326 | 0 | memset(&netinfo, 0, sizeof(sr_net_info_t)); |
327 | 0 | netinfo.data.s = buf; |
328 | 0 | netinfo.data.len = len; |
329 | 0 | netinfo.rcv = rcv_info; |
330 | 0 | evp.data = (void *)&netinfo; |
331 | 0 | sr_event_exec(SREV_NET_DATA_RECV, &evp); |
332 | 0 | } |
333 | 0 | } |
334 | |
|
335 | 0 | inb.s = buf; |
336 | 0 | inb.len = len; |
337 | 0 | evp.data = (void *)&inb; |
338 | 0 | evp.rcv = rcv_info; |
339 | 0 | sr_event_exec(SREV_NET_DATA_IN, &evp); |
340 | 0 | len = inb.len; |
341 | |
|
342 | 0 | msg = pkg_malloc(sizeof(struct sip_msg)); |
343 | 0 | if(unlikely(msg == 0)) { |
344 | 0 | PKG_MEM_ERROR; |
345 | 0 | goto error00; |
346 | 0 | } |
347 | 0 | msg_no++; |
348 | | /* number of vias parsed -- good for diagnostic info in replies */ |
349 | 0 | via_cnt = 0; |
350 | |
|
351 | 0 | memset(msg, 0, sizeof(struct sip_msg)); /* init everything to 0 */ |
352 | | /* fill in msg */ |
353 | 0 | msg->buf = buf; |
354 | 0 | msg->len = len; |
355 | | /* zero termination (termination of orig message below not that |
356 | | * useful as most of the work is done with scratch-pad; -jiri */ |
357 | | /* buf[len]=0; */ /* WARNING: zero term removed! */ |
358 | 0 | msg->rcv = *rcv_info; |
359 | 0 | msg->id = msg_no; |
360 | 0 | msg->pid = my_pid(); |
361 | 0 | msg->set_global_address = default_global_address; |
362 | 0 | msg->set_global_port = default_global_port; |
363 | |
|
364 | 0 | if(likely(sr_msg_time == 1)) |
365 | 0 | msg_set_time(msg); |
366 | |
|
367 | 0 | if(parse_msg(buf, len, msg) != 0) { |
368 | 0 | errsipmsg = 1; |
369 | 0 | evp.data = (void *)msg; |
370 | 0 | if((ret = sr_event_exec(SREV_RCV_NOSIP, &evp)) < NONSIP_MSG_DROP) { |
371 | 0 | LM_DBG("attempt of nonsip message processing failed\n"); |
372 | 0 | } else if(ret == NONSIP_MSG_DROP) { |
373 | 0 | LM_DBG("nonsip message processing completed\n"); |
374 | 0 | goto end; |
375 | 0 | } |
376 | 0 | } |
377 | 0 | if(errsipmsg == 1) { |
378 | 0 | LOG(cfg_get(core, core_cfg, sip_parser_log), |
379 | 0 | "core parsing of SIP message failed (%s:%d/%d)\n", |
380 | 0 | ip_addr2a(&msg->rcv.src_ip), (int)msg->rcv.src_port, |
381 | 0 | (int)msg->rcv.proto); |
382 | 0 | sr_core_ert_run(msg, SR_CORE_ERT_RECEIVE_PARSE_ERROR); |
383 | 0 | goto error02; |
384 | 0 | } |
385 | | |
386 | 0 | if(unlikely(parse_headers(msg, |
387 | 0 | HDR_FROM_F | HDR_TO_F | HDR_CALLID_F | HDR_CSEQ_F, 0) |
388 | 0 | < 0)) { |
389 | 0 | LOG(cfg_get(core, core_cfg, sip_parser_log), |
390 | 0 | "parsing relevant headers failed\n"); |
391 | 0 | } |
392 | 0 | LM_DBG("--- received sip message - %s - call-id: [%.*s] - cseq: [%.*s]\n", |
393 | 0 | (msg->first_line.type == SIP_REQUEST) ? "request" : "reply", |
394 | 0 | (msg->callid && msg->callid->body.s) ? msg->callid->body.len : 0, |
395 | 0 | (msg->callid && msg->callid->body.s) ? msg->callid->body.s : "", |
396 | 0 | (msg->cseq && msg->cseq->body.s) ? msg->cseq->body.len : 0, |
397 | 0 | (msg->cseq && msg->cseq->body.s) ? msg->cseq->body.s : ""); |
398 | | |
399 | | /* set log prefix */ |
400 | 0 | log_prefix_set(msg); |
401 | | |
402 | | /* ... clear branches from previous message */ |
403 | 0 | clear_branches(); |
404 | |
|
405 | 0 | ret = ksr_evrt_pre_routing(msg); |
406 | 0 | if(ret < 0) { |
407 | 0 | goto error02; |
408 | 0 | } |
409 | 0 | if(ret == 1) { |
410 | | /* finished */ |
411 | 0 | goto end; |
412 | 0 | } |
413 | | |
414 | 0 | if(unlikely(ksr_route_locks_set != NULL && msg->callid |
415 | 0 | && msg->callid->body.s && msg->callid->body.len > 0)) { |
416 | 0 | cidlockidx = get_hash1_raw(msg->callid->body.s, msg->callid->body.len); |
417 | 0 | cidlockidx = cidlockidx % ksr_route_locks_set->size; |
418 | 0 | cidlockset = 1; |
419 | 0 | } |
420 | | |
421 | |
|
422 | 0 | if(is_printable(cfg_get(core, core_cfg, latency_cfg_log))) { |
423 | 0 | exectime = 1; |
424 | 0 | } |
425 | |
|
426 | 0 | if(msg->first_line.type == SIP_REQUEST) { |
427 | 0 | ruri_mark_new(); /* ruri is usable for forking (not consumed yet) */ |
428 | 0 | if(!IS_SIP(msg)) { |
429 | 0 | LM_DBG("handling non-sip request message\n"); |
430 | 0 | if((ret = nonsip_msg_run_hooks(msg)) != NONSIP_MSG_ACCEPT) { |
431 | 0 | if(unlikely(ret == NONSIP_MSG_ERROR)) { |
432 | 0 | LM_DBG("failed handling non-sip request message\n"); |
433 | 0 | goto error03; |
434 | 0 | } |
435 | 0 | LM_DBG("finished handling non-sip request message\n"); |
436 | 0 | goto end; /* drop the message */ |
437 | 0 | } |
438 | 0 | } |
439 | | /* sanity checks */ |
440 | 0 | if(unlikely((msg->via1 == 0) || (msg->via1->error != PARSE_OK))) { |
441 | | /* no via, send back error ? */ |
442 | 0 | LOG(cfg_get(core, core_cfg, sip_parser_log), |
443 | 0 | "no via found in request\n"); |
444 | 0 | STATS_BAD_MSG(); |
445 | 0 | goto error02; |
446 | 0 | } |
447 | 0 | if(unlikely((msg->callid == 0) || (msg->cseq == 0) || (msg->from == 0) |
448 | 0 | || (msg->to == 0))) { |
449 | | /* no required headers -- send back error ? */ |
450 | 0 | LOG(cfg_get(core, core_cfg, sip_parser_log), |
451 | 0 | "required headers not found in request\n"); |
452 | 0 | STATS_BAD_MSG(); |
453 | 0 | goto error02; |
454 | 0 | } |
455 | | /* check if necessary to add receive?->moved to forward_req */ |
456 | | /* check for the alias stuff */ |
457 | 0 | #ifdef USE_TCP |
458 | 0 | if(msg->via1->alias && cfg_get(tcp, tcp_cfg, accept_aliases) |
459 | 0 | && (((rcv_info->proto == PROTO_TCP) && !tcp_disable) |
460 | 0 | #ifdef USE_TLS |
461 | 0 | || ((rcv_info->proto == PROTO_TLS) && !tls_disable) |
462 | 0 | #endif |
463 | 0 | )) { |
464 | 0 | if(tcpconn_add_alias(rcv_info->proto_reserved1, msg->via1->port, |
465 | 0 | rcv_info->proto) |
466 | 0 | != 0) { |
467 | 0 | LM_ERR("tcp alias failed\n"); |
468 | | /* continue */ |
469 | 0 | } |
470 | 0 | } |
471 | 0 | #endif |
472 | | |
473 | | /* skip: */ |
474 | 0 | LM_DBG("preparing to run routing scripts...\n"); |
475 | 0 | if(exectime) { |
476 | 0 | gettimeofday(&tvb, NULL); |
477 | 0 | } |
478 | | /* execute pre-script callbacks, if any; -jiri */ |
479 | | /* if some of the callbacks said not to continue with |
480 | | * script processing, don't do so |
481 | | * if we are here basic sanity checks are already done |
482 | | * (like presence of at least one via), so you can count |
483 | | * on via1 being parsed in a pre-script callback --andrei |
484 | | */ |
485 | 0 | if(exec_pre_script_cb(msg, REQUEST_CB_TYPE) == 0) { |
486 | 0 | STATS_REQ_FWD_DROP(); |
487 | 0 | goto end; /* drop the request */ |
488 | 0 | } |
489 | | |
490 | 0 | set_route_type(REQUEST_ROUTE); |
491 | | /* exec the routing script */ |
492 | 0 | if(unlikely(main_rt.rlist[DEFAULT_RT] == NULL)) { |
493 | 0 | keng = sr_kemi_eng_get(); |
494 | 0 | if(keng == NULL) { |
495 | 0 | LM_ERR("no request_route {...} and no other config routing" |
496 | 0 | " engine registered\n"); |
497 | 0 | goto error_req; |
498 | 0 | } |
499 | 0 | if(unlikely(cidlockset)) { |
500 | 0 | rec_lock_set_get(ksr_route_locks_set, cidlockidx); |
501 | 0 | if(sr_kemi_route(keng, msg, REQUEST_ROUTE, NULL, NULL) < 0) |
502 | 0 | LM_NOTICE("negative return code from engine function\n"); |
503 | 0 | rec_lock_set_release(ksr_route_locks_set, cidlockidx); |
504 | 0 | } else { |
505 | 0 | if(sr_kemi_route(keng, msg, REQUEST_ROUTE, NULL, NULL) < 0) |
506 | 0 | LM_NOTICE("negative return code from engine function\n"); |
507 | 0 | } |
508 | 0 | } else { |
509 | 0 | if(unlikely(cidlockset)) { |
510 | 0 | rec_lock_set_get(ksr_route_locks_set, cidlockidx); |
511 | 0 | if(run_top_route(main_rt.rlist[DEFAULT_RT], msg, 0) < 0) { |
512 | 0 | rec_lock_set_release(ksr_route_locks_set, cidlockidx); |
513 | 0 | LM_WARN("error while trying script\n"); |
514 | 0 | goto error_req; |
515 | 0 | } |
516 | 0 | rec_lock_set_release(ksr_route_locks_set, cidlockidx); |
517 | 0 | } else { |
518 | 0 | if(run_top_route(main_rt.rlist[DEFAULT_RT], msg, 0) < 0) { |
519 | 0 | LM_WARN("error while trying script\n"); |
520 | 0 | goto error_req; |
521 | 0 | } |
522 | 0 | } |
523 | 0 | } |
524 | | |
525 | 0 | if(exectime) { |
526 | 0 | gettimeofday(&tve, NULL); |
527 | 0 | diff = (tve.tv_sec - tvb.tv_sec) * 1000000 |
528 | 0 | + (tve.tv_usec - tvb.tv_usec); |
529 | 0 | if(cfg_get(core, core_cfg, latency_limit_cfg) == 0 |
530 | 0 | || cfg_get(core, core_cfg, latency_limit_cfg) <= diff) { |
531 | 0 | LOG(cfg_get(core, core_cfg, latency_cfg_log), |
532 | 0 | "request-route executed in: %d usec\n", diff); |
533 | 0 | } |
534 | 0 | } |
535 | | |
536 | | /* execute post request-script callbacks */ |
537 | 0 | exec_post_script_cb(msg, REQUEST_CB_TYPE); |
538 | 0 | } else if(msg->first_line.type == SIP_REPLY) { |
539 | | /* sanity checks */ |
540 | 0 | if((msg->via1 == 0) || (msg->via1->error != PARSE_OK)) { |
541 | | /* no via, send back error ? */ |
542 | 0 | LM_ERR("no via found in reply\n"); |
543 | 0 | STATS_BAD_RPL(); |
544 | 0 | goto error02; |
545 | 0 | } |
546 | 0 | if(unlikely((msg->callid == 0) || (msg->cseq == 0) || (msg->from == 0) |
547 | 0 | || (msg->to == 0))) { |
548 | | /* no required headers -- send back error ? */ |
549 | 0 | LOG(cfg_get(core, core_cfg, sip_parser_log), |
550 | 0 | "required headers not found in reply\n"); |
551 | 0 | STATS_BAD_RPL(); |
552 | 0 | goto error02; |
553 | 0 | } |
554 | | |
555 | 0 | if(exectime) { |
556 | 0 | gettimeofday(&tvb, NULL); |
557 | 0 | } |
558 | | |
559 | | /* execute pre-script callbacks, if any; -jiri */ |
560 | | /* if some of the callbacks said not to continue with |
561 | | * script processing, don't do so |
562 | | * if we are here basic sanity checks are already done |
563 | | * (like presence of at least one via), so you can count |
564 | | * on via1 being parsed in a pre-script callback --andrei |
565 | | */ |
566 | 0 | if(exec_pre_script_cb(msg, ONREPLY_CB_TYPE) == 0) { |
567 | 0 | STATS_RPL_FWD_DROP(); |
568 | 0 | goto end; /* drop the reply */ |
569 | 0 | } |
570 | | |
571 | | /* exec the onreply routing script */ |
572 | 0 | if(kemi_reply_route_callback.len > 0) { |
573 | 0 | keng = sr_kemi_eng_get(); |
574 | 0 | } |
575 | 0 | if(onreply_rt.rlist[DEFAULT_RT] != NULL || keng != NULL) { |
576 | 0 | set_route_type(CORE_ONREPLY_ROUTE); |
577 | 0 | ret = 1; |
578 | 0 | if(unlikely(keng != NULL)) { |
579 | 0 | bctx = sr_kemi_act_ctx_get(); |
580 | 0 | init_run_actions_ctx(&ctx); |
581 | 0 | sr_kemi_act_ctx_set(&ctx); |
582 | 0 | if(unlikely(cidlockset)) { |
583 | 0 | rec_lock_set_get(ksr_route_locks_set, cidlockidx); |
584 | 0 | ret = sr_kemi_route( |
585 | 0 | keng, msg, CORE_ONREPLY_ROUTE, NULL, NULL); |
586 | 0 | rec_lock_set_release(ksr_route_locks_set, cidlockidx); |
587 | 0 | } else { |
588 | 0 | ret = sr_kemi_route( |
589 | 0 | keng, msg, CORE_ONREPLY_ROUTE, NULL, NULL); |
590 | 0 | } |
591 | 0 | sr_kemi_act_ctx_set(bctx); |
592 | 0 | } else { |
593 | 0 | if(unlikely(cidlockset)) { |
594 | 0 | rec_lock_set_get(ksr_route_locks_set, cidlockidx); |
595 | 0 | ret = run_top_route( |
596 | 0 | onreply_rt.rlist[DEFAULT_RT], msg, &ctx); |
597 | 0 | rec_lock_set_release(ksr_route_locks_set, cidlockidx); |
598 | 0 | } else { |
599 | 0 | ret = run_top_route( |
600 | 0 | onreply_rt.rlist[DEFAULT_RT], msg, &ctx); |
601 | 0 | } |
602 | 0 | } |
603 | 0 | #ifndef NO_ONREPLY_ROUTE_ERROR |
604 | 0 | if(unlikely(ret < 0)) { |
605 | 0 | LM_WARN("error while trying onreply script\n"); |
606 | 0 | goto error_rpl; |
607 | 0 | } else |
608 | 0 | #endif /* NO_ONREPLY_ROUTE_ERROR */ |
609 | 0 | if(unlikely(ret == 0 || (ctx.run_flags & DROP_R_F))) { |
610 | 0 | STATS_RPL_FWD_DROP(); |
611 | 0 | LM_DBG("drop flag set - skip forwarding the reply\n"); |
612 | 0 | goto skip_send_reply; /* drop the message, no error */ |
613 | 0 | } |
614 | 0 | } |
615 | | /* send the msg */ |
616 | 0 | forward_reply(msg); |
617 | 0 | skip_send_reply: |
618 | 0 | if(exectime) { |
619 | 0 | gettimeofday(&tve, NULL); |
620 | 0 | diff = (tve.tv_sec - tvb.tv_sec) * 1000000 |
621 | 0 | + (tve.tv_usec - tvb.tv_usec); |
622 | 0 | if(cfg_get(core, core_cfg, latency_limit_cfg) == 0 |
623 | 0 | || cfg_get(core, core_cfg, latency_limit_cfg) <= diff) { |
624 | 0 | LOG(cfg_get(core, core_cfg, latency_cfg_log), |
625 | 0 | "reply-route executed in: %d usec\n", diff); |
626 | 0 | } |
627 | 0 | } |
628 | | |
629 | | /* execute post reply-script callbacks */ |
630 | 0 | exec_post_script_cb(msg, ONREPLY_CB_TYPE); |
631 | 0 | } |
632 | | |
633 | 0 | end: |
634 | 0 | ksr_msg_env_reset(); |
635 | 0 | LM_DBG("cleaning up\n"); |
636 | 0 | free_sip_msg(msg); |
637 | 0 | pkg_free(msg); |
638 | | /* reset log prefix */ |
639 | 0 | log_prefix_set(NULL); |
640 | 0 | return 0; |
641 | | |
642 | 0 | #ifndef NO_ONREPLY_ROUTE_ERROR |
643 | 0 | error_rpl: |
644 | | /* execute post reply-script callbacks */ |
645 | 0 | exec_post_script_cb(msg, ONREPLY_CB_TYPE); |
646 | 0 | goto error02; |
647 | 0 | #endif /* NO_ONREPLY_ROUTE_ERROR */ |
648 | 0 | error_req: |
649 | 0 | LM_DBG("error:...\n"); |
650 | | /* execute post request-script callbacks */ |
651 | 0 | exec_post_script_cb(msg, REQUEST_CB_TYPE); |
652 | 0 | error03: |
653 | 0 | error02: |
654 | 0 | free_sip_msg(msg); |
655 | 0 | pkg_free(msg); |
656 | 0 | error00: |
657 | 0 | ksr_msg_env_reset(); |
658 | | /* reset log prefix */ |
659 | 0 | log_prefix_set(NULL); |
660 | 0 | return -1; |
661 | 0 | } |
662 | | |
663 | | /** |
664 | | * clean up msg environment, such as avp, xavp and xavu lists |
665 | | */ |
666 | | void ksr_msg_env_reset(void) |
667 | 0 | { |
668 | 0 | reset_avps(); |
669 | 0 | xavp_reset_list(); |
670 | 0 | xavu_reset_list(); |
671 | 0 | xavi_reset_list(); |
672 | 0 | } |